RAD 315 Quiz 5 Elbow & Humerus
AP distal humerus: acute flexion of elbow
Relationship of the distal humerus
AP elbow (x-ray)
True AP projection - lateral and medial epicondyles of the distal humerus have to be parallel to the IR (Central ray perpendicular to joint space, 40 inches, Wrist and elbow needs to be in the same plane)
PA axial olecranon process with central ray angulation
- 20 degrees - relationship of the proximal, radius and ulna
AP oblique elbow: lateral rotation
- 30/45 degrees angle of the sponge
Coyle method: demonstration of the coronoid process and trochlea
- 80 degrees - central ray 45 degrees
Axiolateral projection of the elbow: Coyle method
- 90 degrees - central ray 45 degrees toward the shoulder - demonstration of radial head and capitulum
AP elbow, wide latitude
- True AP projection - lateral and medial epicondyles of the distal humerus have to be parallel to the IR (Central ray perpendicular to joint space, 40 inches, Wrist and elbow needs to be in the same plane)
PA proximal forearm: full flexion of elbow
- central ray 45 degrees, perpendicular to the forearm
Recumbent position: AP humerus
- hand is supinated
AP oblique elbow: lateral rotation (x-ray)
- palm upward, rotated laterally - purpose: radial head is in profile, radial tuberosity
AP oblique elbow: medial rotation (x-ray)
Hand is palm down, Purpose: coronoid process in profile and electron in the electron fossa
Lateral elbow
Shoulder, wrist and elbow on the same plane - 90 degrees - Wrist in true lateral position (Olecranon process is in profile, Coronoid process to the distal part of the humerus is in relation, Epipcondyle are perpendicular to each other, Fat pads will show if there is trama)
AP elbow, partially flexed, demonstrating distal humerus
done if the elbow is injured
AP elbow, partially flexed, demonstrating proximal forearm
done if the elbow is injured
Recumbent position: Lateral humerus
posterior aspect of the hand is against the thigh
PA axial distal humerus
relationship of the distal humerus, central ray of 75 degrees